Characteristics of the electromagnetic interference shielding effectiveness of Al-doped ZnO thin films deposited by atomic layer deposition

Choi, Yong June; Gong, Soo Jung; Johnson, David C.; Golledge, Stephen L.; Yeom, Geun Young; Park, Hyung Ho

doi:10.1016/j.apsusc.2012.09.159

Cited by 80 publications

(39 citation statements)

References 29 publications

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“…However, due to low conductivity, of late ZnO is doped with metal cation and its EMI shielding properties are studied. Choi et al have reported that on doping Al with ZnO EMI shielding improved six times [22] . ZnO when doped with highly transparent and conducting 3d transition metal turns out to be a promising material for the emerging field of diluted magnetic semiconductors (DMS) which has made possible to fabricate electrical or optical structures with controlled ferromagnetism.…”

Section: Introductionmentioning

confidence: 98%

Co-doped ZnO–PVA Nanocomposite for EMI Shielding

Singh¹,

Kumar²,

Sawant³

et al. 2015

Polymer-Plastics Technology and Engineering

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The paper describes the mechanical properties and electromagnetic shielding (EMI) of Co doped ZnO-Poly(vinyl alcohol) (PVA) nanocomposite. Significant improvements in mechanical properties can be obtained by incorporating inorganic nano fillers. The EModulus and tensile strength were found to be enhanced with the increase in the doping concentration of Co .05 Zn .95 O incorporated in PVA matrix. Further, we have observed that EMI of the composite filled with 2 wt% concentration of Co .05 Zn .95 O in the PVA matrix exhibited utmost reflection loss of -47.31 dB in the bandwidth 8-12 GHz which may be attributed to good compatibility of dielectric and magnetic properties of materials. Downloaded by [University of Sussex Library] at 12:06 24 August 2015 2

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Section: Introductionmentioning

confidence: 98%

Co-doped ZnO–PVA Nanocomposite for EMI Shielding

Singh¹,

Kumar²,

Sawant³

et al. 2015

Polymer-Plastics Technology and Engineering

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“…ions (Al Zn ) or from an association of donor sites with oxygen vacancies. Chemical reduction or intentional doping can easily create these donor sites [9]. The films resistivity q is mainly affected by carrier concentration N and the mobility l with the following relation…”

Section: Electrical Characteristicsmentioning

confidence: 99%

“…The films present good thermal stability, they are abundant, non toxic and not expensive [6]. The mostly used ZnO:Al thin film has been prepared with various methods: radio frequency (RF) sputtering [7], pulsed laser deposition [8], atomic layer deposition and chemical vapor deposition [9]. Many authors have studied the RF sputtering of ZnO:Al target [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Structural and opto-electrical properties of Al doped ZnO sputtered thin films

Laghfour

Ajjammouri

Aazou

et al. 2015

J Mater Sci: Mater Electron

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Transparent and conductive aluminum-doped zinc oxide (AZO) thin films with high preferential c-axis orientation have been deposited on glass substrates by radio frequency magnetron sputtering method of ZnO and DC magnetron sputtering of Al. Structural, surface morphology, optical and electrical properties of ZnO thin films were studied by X-ray diffraction, scanning electron microscope, ultraviolet-visible spectrophotometer, surface plasmon spectroscopy and Hall effect measurements. The results show that AZO films are polycrystalline and exhibit the hexagonal wurzite crystal structure with a preferred orientation along (002) direction. When DC sputtering power supplied to Al target increases, the crystallinity decreases while the electrical resistivity increases. The average measured transmittance exceeded 75 % in the visible range for all AZO thin films. The band gap values increase with decreasing the Al concentrations.

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“…Conventional, electromagnetic interference (EMI) shielding is using braided/foil-type or solid metal but they are bulky and also they are conductor [3], [4]. It will impose electric safety issue because of the metal shielded may cause electrocution.…”

Section: Introductionmentioning

confidence: 99%

Distributed Plastic Gapped Magnetic Shielding to Electromagnetic Interference for Electric Transportation

Eric¹,

Zou²

2017

IJMERR

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Magnetic shielding is an important design for all electrical system. This is especially important to today's electric mobility because nearly all traction drives are using electric motor and they are driven by high frequency carrier wave from 1kHz to 100kHz. The interference to the signal system of vehicle control unit should cost a damaging effect. Besides the use of filter of metal shielding, a new plastic based magnetic shielding technique is introduced that provides a flexible shielding for the EMI isolation. The new material is especially useful for transportation system because they are light weight, non-brittle, lower cost and prominent performance in high frequency. 

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Characteristics of the electromagnetic interference shielding effectiveness of Al-doped ZnO thin films deposited by atomic layer deposition

Cited by 80 publications

References 29 publications

Co-doped ZnO–PVA Nanocomposite for EMI Shielding

Co-doped ZnO–PVA Nanocomposite for EMI Shielding

Structural and opto-electrical properties of Al doped ZnO sputtered thin films

Distributed Plastic Gapped Magnetic Shielding to Electromagnetic Interference for Electric Transportation

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